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1、數(shù)詞數(shù)詞復(fù)習(xí)復(fù)習(xí)數(shù)詞數(shù)詞的構(gòu)成的構(gòu)成基基數(shù)詞數(shù)詞序數(shù)詞序數(shù)詞112有各自獨(dú)立的形式。有各自獨(dú)立的形式。13-19都是相對(duì)應(yīng)都是相對(duì)應(yīng)39加上加上teen構(gòu)成，特殊拼寫的構(gòu)成，特殊拼寫的詞有詞有thirteen, fifteen, eighteen。2090都以都以-ty結(jié)尾，特殊拼寫的有結(jié)尾，特殊拼寫的有twenty, thirty,forty, eighty。2199,整數(shù)十位數(shù)各位數(shù)，中間有整數(shù)十位數(shù)各位數(shù)，中間有“”。百位數(shù)，由百位數(shù)百位數(shù)，由百位數(shù)and+兩位數(shù)組成。兩位數(shù)組成。13分別為分別為first,second,third 。419都是在后面加上都是在后面加上th,特殊的有特殊

2、的有fifth,eighth, ninth,twelfth。2090把把y變成變成ie然后加然后加th,如如twentieth。2199的序數(shù)詞變后面的各位數(shù)。的序數(shù)詞變后面的各位數(shù)。序數(shù)詞可以用縮寫，如序數(shù)詞可以用縮寫，如1st, 2nd, 3rd ,4th基本用法：基本用法：1.基數(shù)詞：表示精確數(shù)字時(shí)，基數(shù)詞：表示精確數(shù)字時(shí)，hundred,thousand,million,billion后面后面都不用變化。但是在表示幾百，幾千等模糊概念時(shí)，這些詞后面要都不用變化。但是在表示幾百，幾千等模糊概念時(shí)，這些詞后面要加上加上s和和of,如：如：hundreds of,而且前面可以加上而且前面可以

3、加上many,tens of等表示等表示不確切的詞，注意不確切的詞，注意several,some是表示確切數(shù)字的詞：是表示確切數(shù)字的詞：several hundred2.數(shù)詞一般是用作復(fù)數(shù)的，但是特殊情況也有復(fù)數(shù)的用法：數(shù)詞一般是用作復(fù)數(shù)的，但是特殊情況也有復(fù)數(shù)的用法：a.在表示一排或者一組的情況下：在表示一排或者一組的情況下：They arrived in twos and threes.b.表示幾十歲：表示幾十歲：the forties-41-49c.表示年代：表示年代：in the 1920s3.基數(shù)詞兼有名詞和形容詞的功能：基數(shù)詞兼有名詞和形容詞的功能：Nine of them are

4、 from Greece.They work forty hours a day.4.序數(shù)詞主要用作定語(yǔ)。一般要加序數(shù)詞主要用作定語(yǔ)。一般要加the.Our classroom is on the third floor.The first part of the story is not interesting.in the first place5.序數(shù)詞也可以用作副詞，序數(shù)詞也可以用作副詞，When did you first see him?Which horse came in first?6.基數(shù)詞也能表示順序，如書刊的卷、章、節(jié)、頁(yè)的數(shù)目，住所、基數(shù)詞也能表示順序，如書刊的卷、章

5、、節(jié)、頁(yè)的數(shù)目，住所、房間、教室、電話號(hào)碼等等。房間、教室、電話號(hào)碼等等。Volume Two, Chapter Four, Section Six, Page Eight, Room 3047.倍數(shù)的表示法倍數(shù)的表示法a. 倍數(shù)（或分?jǐn)?shù)）倍數(shù)（或分?jǐn)?shù)）+ as + adj. + as I have three times as many as you.我有你三倍那么多。我有你三倍那么多。b. 倍數(shù)（分?jǐn)?shù)）倍數(shù)（分?jǐn)?shù)）+ the size (amount，length) of The earth is 49 times the size of the moon.地球是月球的地球是月球的49倍。

6、倍。 c. 倍數(shù)（分?jǐn)?shù)）倍數(shù)（分?jǐn)?shù)）+ 形容詞（副詞）比較級(jí)形容詞（副詞）比較級(jí)+ than The grain output is 8 percent higher this year than that of last year. 今年比去年糧食產(chǎn)量增加今年比去年糧食產(chǎn)量增加8%。d. 還可以用還可以用by+倍數(shù)，表示增加多少倍倍數(shù)，表示增加多少倍 The production of grain has been increased by four times this year. 今年糧食產(chǎn)量增加了今年糧食產(chǎn)量增加了4倍。倍。 8.日期，時(shí)間和分?jǐn)?shù)的表示法見書本日期，時(shí)間和分?jǐn)?shù)的表示法見

7、書本p20。9.也可以用也可以用after和和before 表示時(shí)間，表示時(shí)間，情況分別與情況分別與 past 和和 to 相當(dāng)。如：相當(dāng)。如： 1It is few minutes before six oclock 現(xiàn)在是六點(diǎn)差幾分?，F(xiàn)在是六點(diǎn)差幾分。 2The correct time is three minutes after ten 準(zhǔn)確時(shí)間是十點(diǎn)三分。準(zhǔn)確時(shí)間是十點(diǎn)三分。 3It happened at a quarter before five 事情發(fā)生在五點(diǎn)差一刻的時(shí)候。事情發(fā)生在五點(diǎn)差一刻的時(shí)候。10. 序數(shù)詞前面一般要加序數(shù)詞前面一般要加the,但是也有不加的情況，這個(gè)時(shí)

8、候表示但是也有不加的情況，這個(gè)時(shí)候表示“又一，再一又一，再一”的意思。的意思。They had a second child in 1988.上面的上面的a second 可以用可以用another 代替。代替。Exercises:1. Is there any food for us _ ?A. tenB. tenthC. the tenthD. the ten 2. The bike cost me _ yuan.Afive hundred forty Bfive hundreds fourtyCfive hundred and forty Dfive hundred fourty 3.

9、“Which lesson are you studying now?”-“_”A. The lesson six B. Sixth lessonC. Lesson six D. Lesson sixth 4. The has written a _ compositionAthree-hundred-word Bthree hundred wordsCthree hundreds words Dthree hundreds word 5. She was born on _A A1986,March 9 BMarch 9, 1986C1986,9 March DMarch nine, 198

10、6 ACCAB1. We have finished reading _ units.Athe first twoBfirst twoCthe second Dtwo first 2. My telephone number is _Aeighty eight two forty four zero nineBeight eight two double four O nineCeighty eight two four four zero nineDeight eight two four four zero and nine 3. Every day the old woman sits

11、here for _.A. one and half hourB. one and a half hourC. one and half hours D. one and a half hours 4. Mr Green Will have _ holiday very soon.A. two months B. two monthC. a two-months D. a two-month 5. Mary is_girl.A. an 8 year oldB. 8-years-oldC. the 8 years old D. an 8-year-old ABDDD1. -What day is

12、 today?- -_.-A. June 9. B. TuesdayC. It is hot. D. Its fine. 2. That magnificent _ pyramid was built by the Egyptian people.A. nine-centuries-old B. nine-centurys-oldC. nine century old D. nine-century-old3. -Whats the date today?-_-.A. Its Saturday B. Its JulyC. Its fineD. Its July 154. -What time do you get up every day?-_-.A. Its seven oclock B. Seven oclock timeC. At seven D. On sevenBDDC